The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2007
Filed:
May. 23, 2003
Masaaki Morita, Fujioka, JP;
Hiroyuki Ito, Fujioka, JP;
Masaaki Morita, Fujioka, JP;
Hiroyuki Ito, Fujioka, JP;
Mitsubishi Pencil Co., Ltd., Tokyo, JP;
Abstract
An ink composition for a pressurized ballpoint pen and a pressurized ballpoint pen which can exhibit excellent writing properties, do not cause ink leakage and which are suited to handwriting. The ink composition for a pressurized ballpoint pen includes at least a colorant, a solvent and silica, wherein a coagulated matter containing at least the silica is contained therein, and the ink composition has a viscosity of 10000 to 40000 mPa·s at 25° C. A pressurized ballpoint pen equipped with a refill, in which pressurized gas is charged into an ink reservoir charged with the ink composition for a pressurized ballpoint pen and a closed vessel containing the reservoir is also set forth.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile